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Razer RC21-01810100-R3M1 Kunai 120MM aRGB PWM PC Fan 3-Pack — main product image
Razer RC21-01810100-R3M1 Kunai 120MM aRGB PWM PC Fan 3-Pack
Razer RC21-01810100-R3M1 Kunai 120MM aRGB PWM PC Fan 3-Pack
Razer RC21-01810100-R3M1 Kunai 120MM aRGB PWM PC Fan 3-Pack
Razer RC21-01810100-R3M1 Kunai 120MM aRGB PWM PC Fan 3-Pack
Razer RC21-01810100-R3M1 Kunai 120MM aRGB PWM PC Fan 3-Pack
Razer RC21-01810100-R3M1 Kunai 120MM aRGB PWM PC Fan 3-Pack
Razer

Razer RC21-01810100-R3M1 Kunai 120MM aRGB PWM PC Fan 3-Pack

★★★★★4.6 (156 reviews)

Razer Kunai 120mm aRGB fans deliver high airflow up to 65.5 CFM with full Chroma RGB customization in a 3-pack.

$88.95*$94.95Save 6%
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Razer Kunai 120mm aRGB PC Fan 3-Pack is designed for builders who want both strong thermal performance and synchronized RGB aesthetics. Each fan uses hydraulic bearings and an optimized blade design to push up to 65.5 CFM of airflow at its maximum 2200 RPM, while scaling down to a quiet 500 RPM for low-noise operation during light workloads. The PWM control allows the motherboard or a dedicated fan controller to adjust speeds dynamically based on system temperatures, keeping the build cool under load and quiet at idle.

On the visual side, each fan is loaded with addressable RGB LEDs powered by Razer Chroma RGB, offering access to 16.8 million colors and a library of lighting patterns and effects through Razer Synapse software. The daisy-chain design is a practical standout feature—both the PWM and aRGB cables connect fan-to-fan, supporting chains of up to 8 units and dramatically reducing the number of cables running back to the motherboard or controller. This makes the Kunai fans particularly well suited for builds with extensive fan configurations, where clean cable routing can be a challenge. The 3-pack bundles enough fans for a common front-panel intake or top-panel exhaust setup in a single purchase.

Key Features

Quiet, Powerful: Cool your PC with high airflow aRGB fans packed with LEDs and lighting effects powered by Razer Chroma RGB

Connect Up to 8 Fans: Daisy chain and connect up to 8 Razer Kunai fans to Pulse Width Modulation and aRGB controllers to create immersive lighting effects - supported by Razer Synapse software for ultimate customization

PWM Fan Controller Support: Whether you need maximum airflow to cool your PC or run quietly at lower RPMs, our Pulse Width Modulation fan controller allows you to conveniently adjust fan speed based on your needs (PWM fan sold separately)

Powered by Razer Chroma RGB: Unlock ultimate aRGB customization with 16.8 million colors, light patterns, and effects which react to your gameplay - get the world’s largest lighting ecosystem and control it from one platform

Cooling: 500-2200 RPM,Airflow: 17.48-65.5 CFM

Specifications

Brand
Razer
Model
RC21-01810100-R3M1
Fan Size
120mm
Bearing Type
Hydraulic
RPM Range
500–2200
Airflow
17.48–65.5 CFM
Lighting
Razer Chroma aRGB (16.8 million colors)
Daisy Chain
Up to 8 fans
Software
Razer Synapse
Control
PWM (4-pin)
Pack Quantity
3

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Pros & Cons

👍 Pros

  • 3-pack provides enough fans to outfit a typical PC case's front intake or top exhaust in one purchase.
  • Wide RPM range of 500–2200 allows quiet low-speed operation or aggressive cooling as needed.
  • Daisy-chain connectivity for up to 8 fans significantly reduces cable management complexity.
  • Full Razer Chroma RGB integration with 16.8 million colors and game-reactive lighting effects.
  • 65.5 CFM maximum airflow provides strong cooling performance for high-end PC builds.

👎 Cons

  • Full RGB customization requires Razer Synapse software, which only runs on Windows.
  • Hydraulic bearings, while quieter, may have a shorter lifespan than dual ball-bearing alternatives under continuous operation.
  • The fans reach their best RGB integration within the Razer ecosystem, limiting appeal if you use other manufacturers' lighting platforms.
  • At maximum 2200 RPM, noise levels increase noticeably compared to the quieter low-speed operation.
  • PWM fan controller is sold separately, adding cost if your motherboard lacks sufficient PWM headers.

Frequently Asked Questions

This is a 3-pack, so you receive three 120mm Razer Kunai aRGB fans in a single purchase.
Yes, the Razer Kunai fans support daisy chaining for both PWM and aRGB connections, allowing you to connect up to 8 fans in a chain to reduce cable clutter.
The fans use a standard 4-pin PWM connector and can be controlled by any motherboard PWM header. A separate Razer PWM fan controller is available but sold separately for more advanced speed management.
The aRGB lighting is managed through Razer Synapse software, which provides access to 16.8 million colors, lighting patterns, and game-reactive effects through the Razer Chroma RGB ecosystem.
The fans operate between 500 and 2200 RPM, producing airflow from 17.48 CFM at the low end to 65.5 CFM at maximum speed.

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